Session 7P - Plasma Applications and Plasma Technology.
POSTER session, Thursday morning, November 14
Exhibit Hall - Concourse Level, Adam's Mark
To noninvasively measure the perpendicular and parallel ion temperatures, a laser induced fluorescence diagnostic has been installed on the West Virginia University Hot hELIcon eXperiment (HELIX). The HELIX experiment is unique in that the ions are heated by additional ion cyclotron resonant heating (ICRH). We present the first measurements, with and without ICRH, of the perpendicular ion temperature for argon HELIX plasmas. The ion temperature is investigated as a function of ICRH power, plasma density, and helicon source driving frequency. During ICRH, the change in the electron temperature due to collisional equilibration with the ions is measured with a RF compensated Langmuir probe. If completed in time, measurements of the parallel ion temperature will also be presented.